2 * File pe_module.c - handle PE module information
4 * Copyright (C) 1996, Eric Youngdale.
5 * Copyright (C) 1999-2000, Ulrich Weigand.
6 * Copyright (C) 2004-2007, Eric Pouech.
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 #include "wine/port.h"
32 #include "dbghelp_private.h"
34 #include "wine/debug.h"
36 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
38 /******************************************************************
41 * look for stabs information in PE header (it's how the mingw compiler provides
42 * its debugging information)
44 static BOOL pe_load_stabs(const struct process* pcs, struct module* module,
45 void* mapping, IMAGE_NT_HEADERS* nth)
47 IMAGE_SECTION_HEADER* section;
48 int i, stabsize = 0, stabstrsize = 0;
49 unsigned int stabs = 0, stabstr = 0;
52 section = (IMAGE_SECTION_HEADER*)
53 ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
54 for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
56 if (!strcasecmp((const char*)section->Name, ".stab"))
58 stabs = section->VirtualAddress;
59 stabsize = section->SizeOfRawData;
61 else if (!strncasecmp((const char*)section->Name, ".stabstr", 8))
63 stabstr = section->VirtualAddress;
64 stabstrsize = section->SizeOfRawData;
68 if (stabstrsize && stabsize)
70 ret = stabs_parse(module,
71 module->module.BaseOfImage - nth->OptionalHeader.ImageBase,
72 RtlImageRvaToVa(nth, mapping, stabs, NULL),
74 RtlImageRvaToVa(nth, mapping, stabstr, NULL),
78 TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load");
82 static BOOL CALLBACK dbg_match(const char* file, void* user)
84 /* accept first file */
88 /******************************************************************
93 static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module,
94 const char* dbg_name, DWORD timestamp)
97 HANDLE hFile = INVALID_HANDLE_VALUE, hMap = 0;
98 const BYTE* dbg_mapping = NULL;
99 const IMAGE_SEPARATE_DEBUG_HEADER* hdr;
100 const IMAGE_DEBUG_DIRECTORY* dbg;
103 WINE_TRACE("Processing DBG file %s\n", debugstr_a(dbg_name));
105 if (SymFindFileInPath(pcs->handle, NULL, dbg_name, NULL, 0, 0, 0, tmp, dbg_match, NULL) &&
106 (hFile = CreateFileA(tmp, GENERIC_READ, FILE_SHARE_READ, NULL,
107 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
108 ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
109 ((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
111 hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping;
112 if (hdr->TimeDateStamp != timestamp)
114 WINE_ERR("Warning - %s has incorrect internal timestamp\n",
115 debugstr_a(dbg_name));
117 * Well, sometimes this happens to DBG files which ARE REALLY the
118 * right .DBG files but nonetheless this check fails. Anyway,
119 * WINDBG (debugger for Windows by Microsoft) loads debug symbols
120 * which have incorrect timestamps.
123 if (hdr->Signature == IMAGE_SEPARATE_DEBUG_SIGNATURE)
125 /* section headers come immediately after debug header */
126 const IMAGE_SECTION_HEADER *sectp =
127 (const IMAGE_SECTION_HEADER*)(hdr + 1);
128 /* and after that and the exported names comes the debug directory */
129 dbg = (const IMAGE_DEBUG_DIRECTORY*)
130 (dbg_mapping + sizeof(*hdr) +
131 hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
132 hdr->ExportedNamesSize);
135 ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp,
136 hdr->NumberOfSections, dbg,
137 hdr->DebugDirectorySize / sizeof(*dbg));
140 ERR("Wrong signature in .DBG file %s\n", debugstr_a(tmp));
143 WINE_ERR("-Unable to peruse .DBG file %s (%s)\n", debugstr_a(dbg_name), debugstr_a(tmp));
145 if (dbg_mapping) UnmapViewOfFile(dbg_mapping);
146 if (hMap) CloseHandle(hMap);
147 if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
151 /******************************************************************
152 * pe_load_msc_debug_info
154 * Process MSC debug information in PE file.
156 static BOOL pe_load_msc_debug_info(const struct process* pcs,
157 struct module* module,
158 void* mapping, IMAGE_NT_HEADERS* nth)
161 const IMAGE_DATA_DIRECTORY* dir;
162 const IMAGE_DEBUG_DIRECTORY*dbg = NULL;
165 /* Read in debug directory */
166 dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG;
167 nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY);
168 if (!nDbg) return FALSE;
170 dbg = RtlImageRvaToVa(nth, mapping, dir->VirtualAddress, NULL);
172 /* Parse debug directory */
173 if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED)
175 /* Debug info is stripped to .DBG file */
176 const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*)
177 ((const char*)mapping + dbg->PointerToRawData);
179 if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC ||
180 misc->DataType != IMAGE_DEBUG_MISC_EXENAME)
182 WINE_ERR("-Debug info stripped, but no .DBG file in module %s\n",
183 debugstr_w(module->module.ModuleName));
187 ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp);
192 const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
193 /* Debug info is embedded into PE module */
194 ret = pe_load_debug_directory(pcs, module, mapping, sectp,
195 nth->FileHeader.NumberOfSections, dbg, nDbg);
201 /***********************************************************************
202 * pe_load_export_debug_info
204 static BOOL pe_load_export_debug_info(const struct process* pcs,
205 struct module* module,
206 void* mapping, IMAGE_NT_HEADERS* nth)
209 const IMAGE_EXPORT_DIRECTORY* exports;
210 DWORD base = module->module.BaseOfImage;
213 if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE;
216 /* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */
217 /* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */
218 symt_new_public(module, NULL, module->module.ModuleName, base, 1,
219 TRUE /* FIXME */, TRUE /* FIXME */);
222 /* Add entry point */
223 symt_new_public(module, NULL, "EntryPoint",
224 base + nth->OptionalHeader.AddressOfEntryPoint, 1,
227 /* FIXME: we'd better store addresses linked to sections rather than
229 IMAGE_SECTION_HEADER* section;
230 /* Add start of sections */
231 section = (IMAGE_SECTION_HEADER*)
232 ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
233 for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
235 symt_new_public(module, NULL, section->Name,
236 RtlImageRvaToVa(nth, mapping, section->VirtualAddress, NULL),
237 1, TRUE /* FIXME */, TRUE /* FIXME */);
241 /* Add exported functions */
242 if ((exports = RtlImageDirectoryEntryToData(mapping, FALSE,
243 IMAGE_DIRECTORY_ENTRY_EXPORT, &size)))
245 const WORD* ordinals = NULL;
246 const DWORD_PTR* functions = NULL;
247 const DWORD* names = NULL;
251 functions = RtlImageRvaToVa(nth, mapping, exports->AddressOfFunctions, NULL);
252 ordinals = RtlImageRvaToVa(nth, mapping, exports->AddressOfNameOrdinals, NULL);
253 names = RtlImageRvaToVa(nth, mapping, exports->AddressOfNames, NULL);
255 if (functions && ordinals && names)
257 for (i = 0; i < exports->NumberOfNames; i++)
259 if (!names[i]) continue;
260 symt_new_public(module, NULL,
261 RtlImageRvaToVa(nth, mapping, names[i], NULL),
262 base + functions[ordinals[i]],
263 1, TRUE /* FIXME */, TRUE /* FIXME */);
266 for (i = 0; i < exports->NumberOfFunctions; i++)
268 if (!functions[i]) continue;
269 /* Check if we already added it with a name */
270 for (j = 0; j < exports->NumberOfNames; j++)
271 if ((ordinals[j] == i) && names[j]) break;
272 if (j < exports->NumberOfNames) continue;
273 snprintf(buffer, sizeof(buffer), "%d", i + exports->Base);
274 symt_new_public(module, NULL, buffer, base + (DWORD)functions[i], 1,
275 TRUE /* FIXME */, TRUE /* FIXME */);
279 /* no real debug info, only entry points */
280 if (module->module.SymType == SymDeferred)
281 module->module.SymType = SymExport;
285 /******************************************************************
289 BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
295 IMAGE_NT_HEADERS* nth;
297 hFile = CreateFileW(module->module.LoadedImageName, GENERIC_READ, FILE_SHARE_READ,
298 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
299 if (hFile == INVALID_HANDLE_VALUE) return ret;
300 if ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0)
302 if ((mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL)
304 nth = RtlImageNtHeader(mapping);
306 if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
308 ret = pe_load_stabs(pcs, module, mapping, nth) ||
309 pe_load_msc_debug_info(pcs, module, mapping, nth);
310 /* if we still have no debug info (we could only get SymExport at this
311 * point), then do the SymExport except if we have an ELF container,
312 * in which case we'll rely on the export's on the ELF side
315 /* FIXME shouldn't we check that? if (!module_get_debug(pcs, module))l */
316 if (pe_load_export_debug_info(pcs, module, mapping, nth) && !ret)
318 UnmapViewOfFile(mapping);
327 /******************************************************************
328 * pe_load_native_module
331 struct module* pe_load_native_module(struct process* pcs, const WCHAR* name,
332 HANDLE hFile, DWORD base, DWORD size)
334 struct module* module = NULL;
337 WCHAR loaded_name[MAX_PATH];
339 loaded_name[0] = '\0';
345 if ((hFile = FindExecutableImageExW(name, pcs->search_path, loaded_name, NULL, NULL)) == NULL)
349 else if (name) strcpyW(loaded_name, name);
350 else if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
351 FIXME("Trouble ahead (no module name passed in deferred mode)\n");
353 if ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != NULL)
357 if ((mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL)
359 IMAGE_NT_HEADERS* nth = RtlImageNtHeader(mapping);
363 if (!base) base = nth->OptionalHeader.ImageBase;
364 if (!size) size = nth->OptionalHeader.SizeOfImage;
366 module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size,
367 nth->FileHeader.TimeDateStamp,
368 nth->OptionalHeader.CheckSum);
371 if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
372 module->module.SymType = SymDeferred;
374 pe_load_debug_info(pcs, module);
377 ERR("could not load the module '%s'\n", debugstr_w(loaded_name));
379 UnmapViewOfFile(mapping);
383 if (opened) CloseHandle(hFile);
388 /******************************************************************
392 BOOL pe_load_nt_header(HANDLE hProc, DWORD base, IMAGE_NT_HEADERS* nth)
394 IMAGE_DOS_HEADER dos;
396 return ReadProcessMemory(hProc, (char*)base, &dos, sizeof(dos), NULL) &&
397 dos.e_magic == IMAGE_DOS_SIGNATURE &&
398 ReadProcessMemory(hProc, (char*)(base + dos.e_lfanew),
399 nth, sizeof(*nth), NULL) &&
400 nth->Signature == IMAGE_NT_SIGNATURE;
403 /******************************************************************
404 * pe_load_builtin_module
407 struct module* pe_load_builtin_module(struct process* pcs, const WCHAR* name,
408 DWORD base, DWORD size)
410 struct module* module = NULL;
412 if (base && pcs->dbg_hdr_addr)
414 IMAGE_NT_HEADERS nth;
416 if (pe_load_nt_header(pcs->handle, base, &nth))
418 if (!size) size = nth.OptionalHeader.SizeOfImage;
419 module = module_new(pcs, name, DMT_PE, FALSE, base, size,
420 nth.FileHeader.TimeDateStamp,
421 nth.OptionalHeader.CheckSum);
427 /***********************************************************************
428 * ImageDirectoryEntryToDataEx (DBGHELP.@)
430 * Search for specified directory in PE image
434 * base [in] Image base address
435 * image [in] TRUE - image has been loaded by loader, FALSE - raw file image
436 * dir [in] Target directory index
437 * size [out] Receives directory size
438 * section [out] Receives pointer to section header of section containing directory data
441 * Success: pointer to directory data
445 PVOID WINAPI ImageDirectoryEntryToDataEx( PVOID base, BOOLEAN image, USHORT dir, PULONG size, PIMAGE_SECTION_HEADER *section )
447 const IMAGE_NT_HEADERS *nt;
452 if (!(nt = RtlImageNtHeader( base ))) return NULL;
453 if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
454 if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
456 *size = nt->OptionalHeader.DataDirectory[dir].Size;
457 if (image || addr < nt->OptionalHeader.SizeOfHeaders)
459 if (section) *section = NULL;
460 return (char *)base + addr;
463 return RtlImageRvaToVa( nt, (HMODULE)base, addr, section );
466 /***********************************************************************
467 * ImageDirectoryEntryToData (DBGHELP.@)
470 * See ImageDirectoryEntryToDataEx
472 PVOID WINAPI ImageDirectoryEntryToData( PVOID base, BOOLEAN image, USHORT dir, PULONG size )
474 return ImageDirectoryEntryToDataEx( base, image, dir, size, NULL );